Lifting locking and unlocking device

The utility model relates to a lifting locking and unlocking device, which belongs to the field of engineering machinery, comprises an equipment rack, and is characterized by further comprising a mounting rack, the mounting rack is connected with the equipment rack through an upper swing arm and a lower swing arm, the upper swing arm and the lower swing arm are respectively hinged with the equipment rack and the mounting rack, and a hanger connecting rod is arranged on the mounting rack; one end of the telescopic mechanism is hinged to the equipment rack, and the other end of the telescopic mechanism is connected with the lower swing arm; the driving gear is fixedly connected to one end, hinged to the mounting frame, of the lower swinging arm; the driven gear is provided with a lock hook, is connected with the mounting frame in a manner of rotating around the axis of the driven gear, and is meshed with the driving gear; according to the utility model, the telescopic mechanism can drive the mounting rack to as